Citation: Nikol'skii, Yu.V.; Maksimov, B.A.; Dem'yanets, L.N.; Ilyukhin, V.V.; Belov, N.V. (1977). Crystal structure of the synthetic rare earth germanate Sm4 Ge3 O9 (O H)6 = Sm4 (Ge(VI) Ge(IV)2 O9) (O H)6. Doklady Akademii Nauk SSSR, 233, pp. 362-365.
Formula: Ge3 H6 O15 Sm4
Chemical name: Sm4 Ge3 O9 (O H)6
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ge12 O60 Sm16 (Ge3 O15 Sm4)
Multiplicity: 1
Coordination sequences: